The commission is gathering that information through an online form on its website.

The form asked the anglers to report the location of their catches, including GPS coordinates for that location; a description of the location, such as “approximately 100 yards downstream of Rockville bridge;” and the nearest town.

Additional information sought on the form includes the date and time of the catch, the condition of the fish, the number of fish observed and the proportion that seemed to have the condition, the approximate size of the fish and water conditions.